Several companies , including ASEA Brown Boveri, Electrical Siemens, E+H, and Emerson , represent the process automation sector . ASEA Brown Boveri is known for automated systems and drives , while Siemens https://keybookmarks.com/story21980603/abb-versus-electrical-siemens-versus-e-h-versus-emerson-a-comparison-at-leading-automation-firms